Portion of a shoe outsole



FIG. 1 is a first side view of a portion of a shoe outsole showing our new design;

FIG. 2 is a second side view thereof; and,

FIG. 3 is a plan view thereof.

The uneven broken line immediately adjacent to the shaded area represents an unclaimed boundary of the design. The uneven broken line showing of the remainder of the shoe is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a shoe outsole, as shown and described. 